Adding type-writer.



J. MALLMAN. ADDING TYPE WRITER. APPLmATroN FILED AUG. 2o, 1910` SHEET 1,

Patented Aug.

Z SHEETS J. MALLMAN. ADDING TYPE WRITER.

APPLICATION FILED AUG 20, 1910 uqam" 2 SHEETS-SHEET 2.

JAMES MALLMAN, OF SHEBOYGAN, \V]SG0NSIN.4

ADDING TYPE-WRITER.

Specification of Letters Patent,

Patented Aug. 1, 1911.

Application filed August 20, 1910. Serial No. 578,100.

To all 'whom 'it may concern:

Be it known that I, JAMES MALLMAN, a citizen of the United States, and resident of Sheboygan, in the county of Sheboygan and State of lise/01min, have invented `certain new and` useful Improvements in Addingr Type-lllriters; and I do hereby declare that the following is a full, clear, and exact description thereof.

liy invention refers to adding typewriters. its object being to provide a simple, accurate and economically constructed machine of this character, the mechanical elements and assemblage of the adding mechanism being such that it can readily be attached t-o any standard design of typewriter having 'a spring actuatedshiftable paper carriage under escapement control, whereby said escapement is lv:ipable of being released by a tabulator mec anism.

The adding me nanism employed in carrying out my present invention is in all of its essential il. tures similar to the mechanism of a recording calculator 7 for which applications for patents were tiled by me July the 22nd, 1.909, Ser. No. 508,851, and October 18, 1909. Ser. No. 523,115.

By employing an adding machine havingr adding mechanism of the above referred to character, its shallow depth. compactness, and alinement of levers renders it possible to place the same under a typewriter and by a simple link connection between the keylcvers of the typewriter, controlling the numeral type characters, and keylcvcrs of the adding mechanism, the typewriter is converted into a recording calculator or adding typewriter capable of performing all of the essential ope 1ations of both a standard adding machine and a typewriter, while at the same time said ty ewriter is free to operate independently andJ when so opera-ted it has the same lightness of touch or key action as heretofore, due to the fact that the add` ing mechanism remains inert. It should be also understood that the tabul'atorv movement of the typewriter is eifected through a series of tabulator keys in connection with the register or adding machinenthe said keys being arranged to supplement ,the usual auxiliary row of tabulator keys'employed, when Va. standard tabulatorequip-l ment is attached to a typewriter.

With the above objects in view the inven-V tion consists in certain peculiaritislof `C011- l .struction and combination of parts as herein set forth with reference to the accompanying drawings and subsequently claimed.

In the drawings Figure 1 represents a seetional elevation 0f an adding typewriter embodying the features of myinvention, there being only such mechanism of the typewriter shown in full lines as pertains to the operation of the combined machines, which typewriter is of a standard style, with the frame and key-board indicated in dotted lines. the base of said frame being secured in any suitable manner to the top face of the adding machine casing, and Fig. 2, a fragmentary plan view of the adding mechanism, the view being partly broken away and partly in section upon a plane as indicated by line 2-2 of Fig. 1.

Referring by reference characters to the f lrawings` 1 represents a casing for an adding machine mechanism. such as shown and described in my appli ation for patent previously referred to.

3 indicates cross rods carried by the casing, upon which are mounted a series of brackets 4 adapted to carry a plurality of addingseetions and their operating mechanism, the essential elements of each vsection of which consists of an adding wheel (i. all adding wheels being mounted upon a fixed shaft 5. Each adding1 n heel carries a toothed pinion 7 adapted to engage a twelve-tooth transmission pinion 8. The transmission pinion 8 of each adding-section is so dispifased as to be engaged by an oscillatory toothed sector 9, which sector is adapted to have,a longitudinal step-by-step movement. whereby each pinion 8 may be successively engaged when the sector is vertically oscillated, said sector being' controlled in its transverse movement in one direction, by .a motor spring in opposition to an escapement mechanism 81, through a series of connections to be hereinafter mentioned.

The transfer mechanism between the add- 'ing-sections forms no part of my prsent inventionv and is therefore. only partly shown, each transfer mechanlsm being can ried by a bell-crank lever 12, as indicated in Fig. 1, and is released by a spring-control locking-dog 17, the dog being tripped by means of a tooth 19 that extends from the Vperiphery of the adding-wheel 6. V

The toothed sector 9 `is so disposedrelw.

tive to the transmission pinion as'toehgage the same ,when oscillated, whereby registration of amounts is had. Thus if the sector is rotated three spaces in connection with the tens adding-section, it is apparent that the register wheels will record 30 cents and 'so on throughout the ent-ire series of register sections, there being, in this instance, eight register Wheels shown.

The sector 9 extends from and forms part of a carriage 24, which carriage engages rails 26, 27, respectively of an oscillatory carriage frame, the lower rail 27 of the carriage frame being mounted in bearings of the casing 1, about which said carriage frame oscillates. The carriage frame rails 26 and 27 are connected by side bars 28, to which side bars are secured coiled sprin s 24, whereby the said carriage frame is he d in its position of rest, as shown in Fig. 1. Links 30 are connected to thev upper rail 26 of the carriage frame and are supported by hangers 32, which hangers are pivoted to the casing 1. The links 30 are connected by a transverse gage-plate 90 that is formed with a series of graduated notches 93, the depth of which notches are successively increased from right to left, whereb said gage-plate is moved horizontally at di ferent xed distances. This movement is accomplished through arms 91 of adding key-levers 92, there being an arm for engagement with the base of each notch. In this instance the machine is designed to be provided with ten adding key-levers which 'may be successively numbered from 0 to 9, each key-lever being held in its position of rest, against a universal stop-rod a, by a coiled spring 100, and is mounted upon a transverse rod 98 secured to the casing. Each adding key-lever arm 91 has connected thereto a push-bar 121, the free ends of the push-bars being guided by a rod b. The outer ends of each push-bar 121. is connected by a coiled spring, 119 to one arm of a bell-crank lever 120, the series of'these levers being mounted upon a fixed shaft c. The other arm of each bell-crank 120 carries a pin that engages the slotted end of a link cl. The upper end of each link is connected to a spring-controlled key-lever e of a typewriter, the connected row of key-levers being those which control the numeral characters of the typewriter.

The printing mechanism shown in connection withV the key-levers e consists ofy type-bars 116, which are fulcrumed upon a rod 117, the type-bars being provided with short arms 118 that are in link connection with the key-levers.

From the foregoin description it will be understood that; eac 1 of the adding keylevers 92 is connected by the described mechanism to a correspondin key-lever of the typewriter ,by the slotte link d and, owing to this loose shackle connection, it

is apparent that the typewriter can be operated without imparting any movement to the adding mechanism while, on the other hand, it' an adding key-lever is depressed, it will operate the mechanism of the typewriter' to which it is attached in the same manner as if it were actuated directly. This movement is effected through the release of a swinging gate 125 which has a locking-bar that extends across the machine and is arranged to engage the ends of the bell-crank lever 120, there being a universal bar 126 also carried by the locking gate and extending across said machine. The universal bar 126 is `adapted to be engaged by spurs 96 that extend from the push-bars.

In order to prevent overthrow'o the sector 9 and insure accuracy in registration in connection with the adding-sections, said sector 9 is provided with a supplementary sector 9a having a series of teeth which, in this instance, correspond in number to the series of operating teeth of said sector. These teeth are so disposed as to be engaged by a universal stop-bar 159, the said bar being provided with feet which are fulcrumed to the casing 1. When an adding key-lever is depressed, just before it reaches the limit of its stroke, it engages the universal stop-bar and causes the same to, in turn, engage the tooth corresponding to movement of this particular adding keylever, whereby the sector is positively checked against overthrow.

To effect a registration with the mechanism just described, Yshould the sector be alined with the pinion 8 of the tens addingsection, the operator would depress the adding key-lever corresponding to the amount -desired to be registered. If, for example,

the amount to be registered was 30 cents, the third adding key-lever from left to right of the series would be depressed. This movement would causev arm 91 to engage its notch 93 of the gage-plate and thereby move said gage-plate horizontally the distance of three spaces rearwardly and thus the sector would be oscillated through its carriage and link connections 30, whereby the transmission pinion 8 imparts rotation to the adding wheel, a distance of three spaces. Just prior to the completion of the movement mentioneu, spur 96 of push-bar 121 will engage bar 126 of the swinging gate. Owing to the initial movement of the push-bar the coiled spring 119 will, at this time, be distended and exerting its pressure upon the bell-crank lever 120. Hence, when spur 96 acts upon the swinging gate, the same-will 'release all of the bell-crank levers 120, but,

owing to the fact that only one of said bellcranks is under spring-pressure, this articular bell-crank willE be oscillated quiclirly, the power of spring 119 being suicient to depress the typewriterkey-lever e to which 0 teeth 87. Manual shift it is connected and thus print the numeral 3 in a similar manner to that performed manually by the tynist.

From the foregoing described operation,

5 1t is apparent that the 'adding key-lever can be depressed. slowly or pushed down as in the case of all standard adding machines, while, at the same time, when a printing operation takes place, the spring im arts'a quick movement tothe type-bars, W ereby -the action of manually operated type is simulated, it being `understood that at the i-netant the coiled spring 1-19 contracts, the

printing mechanism of the ty writer is returned to its position of. rest Je trol of the levers e, the tension of the spring control being comparatively light relative to coiled spring 119, which is manually loaded by movement of the adding keylevers. The adding-key-lever mechanism is -returned to its position of rest through its coiled spring 100 and to insure the bellcrank lever 120 being brought' to its position for rengagement with'the swinging gate, its corresponding push-bar may, as shown, be provided with a pin f, which in will engage the lower 'arm of said bel -crank and positively draw the same back to the position shown. Transverse movement of the sector upon the Vcarriage frame, is obtained, from left to right through motor spring 39, the same being connected to an arm 36 'that is pivoted between earsofa standard 37. The arm 36 also carries projecting a ertured ears for the reception of a rod 35 t at is in telescopic connectiontherewith, the rod being pivoted to a Spanner 34 which h'as ears that are slidably mounted u on the lower rail 27'of the carriage frame, tween which ears the carriage 24 is fitted. The arm 36 is also provided with a shoe 88 having a series of spur-teeth 87 depending therefrom. These spur-teeth'are enga ed by the escapement mechanism 81, whic, as shown,is of the spring-controlled oscillatory anchor type, having a spring finger 84 that normally engages the spur-teeth and a rigid finger olfset uponbla different plane, whereby release is effected.

The escapement mechanism. is' also provided with a universal bar 82, which bar is engaged by spur extensions 102 of each add# ing key-lever, whereby the escapement movement is effected. By utilizing a spring 5 finger escapement mechanism the arm 36 may be manually swung from right to left in opposition to the motor spring 34, said s ring finger being capable of yielding in t 'is direction when onnosbd by -the spur in opposition to the motor spring is elfectedhthrough a series of spring-controlled tabulator key-levers 40, which .key-levers .correspond 'in number to the adding=sections and are mounted upon i the rod 98, being provided withdownwardly' y spring `conextending arms 42, each of which has connected thereto, a horizontally reciprocative plunger-bar 42". The '.rear ends of these p linger-bars are brought rtovether into a nested formation and are gui ed in slots of a bracket 49, which bracket is secured to the casing 1. Each pending contact ug 42'L that is adapted to operate a `swinging gage-plate 41, arms of which plate are mounted upon 'ulcrum screws 41 secured to the side-walls of said casing. The gage-plate 41 is similar in construction to the gage-plate 90` previously described, bein provided with notches 41b graduated in dgepth, the bottoms Vof which notches are designed to be engaged bythe contact lugs 42. Fulcrumed to a standard of the casing 1 is a bell-crank lever 44, one arm of which bell-crank lever is linked to the gage-plate 41, the other arm being connected by a link to arm 36, as clearly shown in Fig. 2. The mechanism just de-V scribed comprises means whereby the'sector 9 is manually shifted to the desired addingsection prior to a. registration, through depression of the addingkeynlevers.` In the operation of this'mechanism, to register" an amount 'upon the second adding-section from ri ht to left, which is the'tens adding wheel, t e operato'i` would depress the'secod tabulatorkey-lever.A .This movement' causes the' plunger-bar 42b connected thereto to move rearwardly and incidental to this movement its contact lu 42. will engage the orresponding notch o gage-plate 41v and hereby' swingthe same a distance, which distance is the depth of said notch. In movement would be sufficient to ,cause the sector 9 to move transversely upon the carriage frame to a point directly under. and alined with the transmission pinion 8 of the tens adding-section, it being understood that the sector, prior to this movement, was in its extreme position, that is one space to the right of the units adding section. The said movement is accomplished through the bell-crank'44, which is oscillated owing to its link connection with ga e-plate 41.' The oscillation of the' bell-cran which is also connected by link 50 toarm 36, thereby swings said arm 36 in opposition to the spring. When the arm 36 is swun over, t e spur-teeth 87 will pass over the yieldin spring iinger 84 of the escapement, whic escapement will engage the tooth and hold arm 36- in its a tion, Thus the sector is now ready'to act upon the addingfsection and u on depression of any one of the'adding ey-levers a registration and printing operation will be' effected as previously described 102 of that adding key-lever which. has been depressed will, at the' finish of the down# etermined by j usted posiward stroke 'of said lever, engage the redetermined this case the The spur` lunger-bar 42 has a deroper spur versal bar 82 of the escapement mechanism and thus operate the same, said escapement mechanism thereby swing from 'left to right the distance of one space and thus this section is automatically posltioned-under the next adding-section of lower order.

A series of spring. controlled tabulatoriingers g4 are fulcrumed upon a stud g that is mounted in any suitable rmanner .upon .the typewriter frame. corres ond in number to 42", e lower ends of said fingers -being alined with and arranged to be enga ed by the ends of said plunger-bars, when the latter are actuated. The upper ends of the tabulator lfingers are shown as extending inwardl for engagement with detachable stops which sto s are carried by a notched tabulator bar ,t e latter being secured to and adapted to travelwith acarriage frame y' ofthe ty writer, the said carriage being provided wlth the usual roller platen and is moved from right to left by aspring drum k that is connected thereto.A

'The carriage and tabulator form nov part of my inventlon and may be of any desired construction, the operation of the parts being well known and consistsessentiallyof mechanism for releasing the carriage from its escapement mechanism (not shown),

said carriage .isz'moved a. predetermined distance and checked by any one adding" of the series of be brought into the path ofV the stop h, whereby the aper carriedby the carriage is roperl almed with' the printing point to e ect a ta ulating operation.

In the. illustration ,shown the tabulator key-levers 40-,are designed to take the place of the ordinary.v tabulator keys and the plun er-bars 42 are adapted to actuate the tab ator fin ers in a similar manner to that usually emp eyed in tabulator vmechanism. Hence, when a tabulat'or key-lever is clepressed, to effect 'shift of the sector 9, the end of its plunger-bar 42.* actuates a 'corresponding tabulator fin er g writer carriage is broug t to the proper po, sition for. tabulating.' I

' From the foregoingdes'cription it will be Seen thata ty ewriter of any standard style' of the .adding 0I upon the top may be place by a simple slotted link permitting arm36 to The tabulator fingersthe plunger-barsv119 where y tabulator fingers which may -its ke s in nism in .connection with and the type.-

mechanism,

the

mechanism key-levers, a

tabulator key-levers, an, Athe aforesaidI levers,

.. 3. An adding t chanical constrnct-ionfto accommodate the l y .machines to eachffothenand even in such cases where it waspossible toeiect this, the

cost of manufactureg'i'tl'gether'with the oven4 l load which Iwas caused A hy-the:various coni nected mechanisms have rendered such devices'unmarletableand the amount of power required Vto o erate the'm, due to the over load, was su that skilled typists found it 'difficult to accommodate their touch to the various movements.. ,Hence said machines have been Vconsidered, up to the present time, impractical.

'While I have -shown and described the rinting operationof the typewriter as being accom lishedv through a coiled spring uniformity of touch will be assured, it should be understood' that, in some instances, I may, without departing from the spirit of my invention, accomplish the result positively by connecting the bellvcrank 120 and push-bar 121 by a rigid link,

and, while this modification is practical, 1t is not preferable for the reason that the adding key-levers' movement is more of a pushing action, whilein typewritin the printing o eration is effected 4by a de -icate uick touc Hence anA expert typist will nd no yobjectionable features in utilizing the machine "as it is constructed for the reason that in business houses or the like, where an adding machine is '-f-.ed,the typist is accustomed to the addinsy' machincmovement, which is distinct' fron-the typewriter movement.

I claim:

` L ln an adding typewriter comprising add:

ing mechanism. actuating key-levers for the addingmechanism,'and a key-controlled tab.

`ulator; the combination. of a superimposed key-actuated typewriter having certain of 4 link connection with the actuating eyJevers ot said adding mechanism, and an automatic .springfactuatingmechathe link connectedtypewriter keys under-.control of the adding mechanism lkey-levers.

2An' adding typewriter comprising addactuating levers therefor, a vsu erimpos'ed' typewriter having type-oars a ptedto be brought toa common printing point, actuating key-levers for the type-bars, other leversin link connection with certain of the key-levers-ofthe typewriter, springs connecting the last named levers and adding universal gate for and a gate releasing mechanism connected to eachactuatingkey lever of the adding machine.

ewriter comprising1 a series of key-contro ed type-bars adapte to be brought to av common printing point, a spring-controlled platen-carrying carriage, a tabulator release mechanism for the carriage, a series of key-controlled adding-secadapted tobe brought to a common amaai -eon'trolled addin #sections and certain of the type-bars where i `the same are actuated incidental to an a ding operation.

spring-controlled paper carriage, type-bars printing point, actuating mechanism for the typears, key-levers connected to the actuating mechanism, a tabulator mechanism for coni trolling movement of the paper carriage, a series of adding-sections, an oscillatoiy shiftable actuating mechanism common to all adding-sections, a series of adding key levers, mechanism controlled by the adding key-levers for imparting movement of different de rees to the actuating mechanism of the ad ing-sections means connecting the adding key-levers and actuating mechanism of certain of the type-bars, whereby the latter are brought to the printing point under control of the adding key-levers, a series of; tabulator 'key-levers, actuating means for the tabulator mechanism under control of thetabulator key-levers, and other means under "control of said tabulator key-levers for shifting the adding-sections actuating mechanism to a position for engagement with the se- Iected adding-section.

5. An adding typewriter comprising a series of type-bars adapted ...o be brought to a common printin point, actuating keyleveis for the typears, a spring-controlled paper carriage. a platen carried by the carriage for receiving impact of the type-liars, stops carried by said carriage, a series of tabulator fingers adapted to engage the stops, a series of gear-actuated addingsec `tions,'a spring-controlled transversely movable :and oscillatory' toothed sector adapted to be brought into engagement with the actuating gear of each adding-section, an escapement mechanism for-the sector, a series of adding key-levers, means controlled by the adding key-levers for imparting oscillatory movement of different degrees to said sector, escapement operating means under control of each addin key-lever, other means connected to sait? adding key-levers and certain o f the type-bars, whereby the latter are actuated incidental to depression of the adding key-levers, a series of tabulator key-levers, and means controlled b the tabulator key-levers for imparting differential transverse movement to the sector in one direction, whereby the saine is brought in alinement with a selected adding-section; 4. An adding typewriter .comprising a 6. An adding typewriter comprising adding mechanism, actuating levers therefor, a superimposed typewriter having type-bars adapted to be brought to a common printing point, actuating key-levers for the type-bars other levers in link'connection with certain of the -key-levers ofthe typewriter, springs connecting the last named levers and adding mechanism key-levers, a locking-gate for each of the aforesaid levers, and a releasing mechanism connected to each actuating lever of the adding machine and gate.

7. An adding typewriter comprising adding mechanism, actuating mechanism therefor, a superimposed typewriter having typebars adapted to be 4brought to a common printing point, actuating levers for the typebars, other levers in link connection with certain of the key-levers of the typewriter springs connecting the last named lever and adding mechanism key-levers,.a lockinggate for each of the aforesaid levers, and gate releasing means undei' control of the adding machine actuating levers.

8. In an adding typewriter comprising adding mechanism, actuating levers for the adding mechanism, and a key-controlled tabulatoi; the combination of a superimposed key-actuated typewriter having typebars adapted to be brought to a common printing oint, levers connecting certa1n of the typears and key-levers ofthe adding mechanism, and springs for automatically actuating those type-bars which are connected to the adding keys: p

. In testimonythat I claim the foregoing I have hereunto set my hand vat Milwaukee, in 100 the county of Milwaukee and State of Wisconsin, in the presence .of `two witnesses. e

,JAMES MALLMAN. Witnesses:

WILLA ODENBRETT, Gao, W. Yonne. 

